It was already sunset and I was being optimistic if I thought I'd get down to the down and back before it got dark, in fact I hardly made it down there before it was dark.
Well having got down onto the Dam and looked over the moonlit lake/reservoir, I set off gingerly down the steps on the west of the dam and back down across the front of the dam and under the bridge alongside the southbound route-22 road. When I got to the other side of the bridge I turned onto the footpath proper and what happended next couldn't have been more exciting and unexpected.
On both sides of the ashphalt path there were lines of hundreds, possibly thousands of fireflys. It was just like being guided down an unlit road with emergancy flashing cones either side. Apparently the males hover above the ground and flash to attract the females.
Wow, this was something else, nature at its best. The show lasted all the way back to the parking lot at White Plains North railroad station. I have to admit that without this distraction I would have a). got bored with a 7-mile run in the dark and b). started to feel the cold. As it was I was to distracted just looking at the fireflys. For someone who grew up in a country where as far as I'm aware they don't have any, this was spectacular!